text: """
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  
  Ambari Agent
  
  """
  import os
  
  from resource_management.core.resources import Directory
  from resource_management.core.resources import File
  from resource_management.libraries.functions import format
  from resource_management.libraries.functions import is_empty
  from resource_management.libraries.functions import lzo_utils
  from resource_management.libraries.resources import XmlConfig
  
  
  def mahout():
    import params
  
    # ensure that matching LZO libraries are installed for Mahout
    lzo_utils.install_lzo_if_needed()
  
    Directory( params.mahout_conf_dir,
               create_parents = True,
               owner = params.mahout_user,
               group = params.user_group
    )
  
    XmlConfig("yarn-site.xml",
              conf_dir=params.hadoop_conf_dir,
              configurations=params.config['configurations']['yarn-site'],
              configuration_attributes=params.config['configuration_attributes']['yarn-site'],
              owner=params.yarn_user,
              group=params.user_group,
              mode=0644
    )
  
    if not is_empty(params.log4j_props):
      File(format("{params.mahout_conf_dir}/log4j.properties"),
           mode=0644,
           group=params.user_group,
           owner=params.mahout_user,
           content=params.log4j_props
      )
    elif (os.path.exists(format("{params.mahout_conf_dir}/log4j.properties"))):
      File(format("{params.mahout_conf_dir}/log4j.properties"),
           mode=0644,
           group=params.user_group,
           owner=params.mahout_user
      )
  